Margin Account
Margin Account
A brokerage account that allows investors to borrow money from their broker-dealer to purchase securities, with the purchased securities serving as collateral. Federal Reserve Regulation T requires 50% initial margin (the investor must deposit at least 50% of the purchase price), while FINRA requires 25% minimum maintenance margin (the account equity must not fall below 25% of the current market value). Interest is charged on the borrowed amount, and investors face the risk of margin calls if account equity falls below maintenance requirements.
An investor with $10,000 cash wants to buy stock worth $20,000. In a margin account, they can borrow the additional $10,000 from their broker (50% initial margin). If the stock value drops to $16,000, the investor now has $6,000 equity ($16,000 - $10,000 loan = $6,000, which is 37.5% equity). If the stock drops further to $12,000, equity falls to $2,000 ($12,000 - $10,000 = $2,000, or 16.7% equity), which is below the 25% minimum maintenance margin, triggering a margin call requiring the investor to deposit additional funds immediately.
Students often confuse initial margin (50% required at purchase under Reg T) with maintenance margin (25% minimum required ongoing under FINRA). Another common mistake is thinking margin accounts provide "free" leverage without risk. in reality, margin accounts amplify both gains AND losses, charge interest on borrowed amounts, and can result in forced liquidation if a margin call is not met. Margin is suitable only for sophisticated investors who understand leverage risk.
How This Is Tested
- Calculating initial margin requirements based on Regulation T (50% of purchase price)
- Determining when a margin call occurs based on maintenance margin thresholds (typically 25-30%)
- Evaluating whether margin accounts are suitable for specific client profiles (risk tolerance, investment experience, financial situation)
- Understanding the risks of leverage, including amplified losses and forced liquidation
- Distinguishing between cash accounts (no borrowing) and margin accounts (borrowing allowed)
Regulatory Limits
| Description | Limit | Notes |
|---|---|---|
| Regulation T initial margin requirement | 50% of purchase price | Federal Reserve regulation requiring investors to deposit at least 50% of the purchase price in cash or eligible securities |
| FINRA minimum maintenance margin | 25% of current market value | Account equity must not fall below 25% of the current market value of securities. Firms often set higher maintenance requirements (30-40%) |
| Typical firm maintenance margin | 30-40% of current market value | Most broker-dealers set maintenance margins higher than the 25% regulatory minimum |
| Margin interest | Varies by broker (typically 5-12% annually) | Interest charged on borrowed amounts, calculated daily and compounded |
| Margin call consequences | Immediate deposit required or forced liquidation | If account equity falls below maintenance margin, the broker can liquidate securities without prior client approval |
Example Exam Questions
Test your understanding with these practice questions. Select an answer to see the explanation.
Sarah, a 28-year-old technology professional with 3 years of investing experience, has $25,000 to invest and maintains a stable income with minimal debt. She wants to open a margin account to "maximize returns" by purchasing $50,000 worth of a volatile biotech stock using maximum leverage. Her stated risk tolerance is "moderate" and her investment timeline is 2-3 years for a down payment on a house. As her IAR, what is the MOST appropriate course of action?
B is correct. This recommendation is unsuitable for multiple reasons: (1) Sarah's "moderate" risk tolerance conflicts with the aggressive strategy of using maximum leverage on a volatile biotech stock—margin amplifies both gains and losses. (2) Her 2-3 year timeline for a house down payment requires capital preservation, not speculation with borrowed money. (3) A single volatile stock violates diversification principles. (4) Margin accounts charge interest, reducing net returns. The IAR's fiduciary duty requires recommending against this strategy and suggesting suitable alternatives aligned with her actual risk tolerance and timeline.
A is incorrect because meeting financial qualifications does not make a margin account suitable. suitability requires alignment with risk tolerance, investment objectives, and time horizon. Sarah's moderate risk tolerance and specific 2-3 year goal for a house down payment make leveraged speculation unsuitable. C is incorrect because limiting margin usage to 25% does not resolve the fundamental suitability issues. the strategy still involves leverage, concentration risk (single volatile stock), and conflicts with her stated moderate risk tolerance and timeline. D is incorrect because suitability obligations cannot be waived. even if Sarah signs a risk disclosure, the IAR must not recommend unsuitable investments. A waiver does not satisfy fiduciary duty or suitability requirements.
The Series 65 exam tests your ability to apply suitability analysis to margin accounts, which are suitable only for sophisticated investors with high risk tolerance, substantial financial resources, and long time horizons. Margin accounts are generally unsuitable for investors with moderate risk tolerance, specific near-term financial goals, or limited investing experience. Understanding when to recommend AGAINST a client's stated preference is a core fiduciary obligation.
What is the minimum initial margin requirement under Federal Reserve Regulation T for purchasing securities in a margin account?
C is correct. Regulation T, established by the Federal Reserve, requires a minimum initial margin of 50% of the purchase price. This means investors must deposit at least 50% in cash or eligible securities when purchasing securities on margin, and can borrow the remaining 50% from the broker-dealer.
A is incorrect because 25% is the FINRA minimum maintenance margin requirement (the minimum equity that must be maintained AFTER purchase), not the initial margin requirement at the time of purchase. B is incorrect because 30% is a common firm-specific maintenance margin requirement (higher than the 25% regulatory minimum), but it is not the Regulation T initial margin requirement. D is incorrect because 75% exceeds the regulatory requirement. while firms may set higher initial margin requirements, Regulation T requires only 50%.
The Series 65 exam frequently tests knowledge of the specific Regulation T 50% initial margin requirement. Understanding the distinction between initial margin (50% at purchase) and maintenance margin (25% minimum ongoing) is critical for answering margin calculation and suitability questions correctly.
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Access Free BetaAn investor purchases $40,000 worth of stock in a margin account, depositing the required 50% initial margin. The stock value subsequently declines to $30,000. What is the current equity percentage in the account, and has a margin call been triggered (assuming 25% minimum maintenance margin)?
A is correct. Calculate equity and percentage:
Initial Position:
- Total purchase: $40,000
- Investor deposit (50% initial margin): $20,000
- Loan from broker: $20,000
After Decline to $30,000:
- Current market value: $30,000
- Loan amount (unchanged): $20,000
- Current equity: $30,000 - $20,000 = $10,000
- Equity percentage: ($10,000 ÷ $30,000) × 100 = 33.3%
Margin Call Analysis:
Minimum maintenance margin is 25%. The account has 33.3% equity, which is ABOVE the 25% minimum, so NO margin call is triggered.
B is incorrect: the calculation is wrong. At $30,000 market value with a $20,000 loan, equity is $10,000 (33.3%), not 25%. C and D contain calculation errors. C incorrectly calculates equity as $6,000 (20%), and D incorrectly calculates equity as $5,000 (16.7%). The correct equity is $10,000 (market value $30,000 minus loan $20,000).
Margin calculation questions are common on the Series 65 exam. You must be able to calculate current equity (market value minus loan) and equity percentage (equity divided by market value) to determine whether a margin call has occurred. Remember: the loan amount stays constant while market value fluctuates, affecting equity percentage.
All of the following statements about margin accounts are accurate EXCEPT
C is correct (the EXCEPT answer). This statement is completely FALSE. Margin accounts do NOT eliminate downside risk. in fact, they AMPLIFY risk. If the market value of securities falls below the loan amount, the investor owes more than the securities are worth and must deposit additional funds. The broker does NOT absorb losses beyond the initial deposit. the investor is responsible for the full loan amount regardless of how much the securities decline in value. Margin accounts can result in losses exceeding the initial investment.
A is accurate: Margin accounts allow borrowing from the broker-dealer, with the purchased securities serving as collateral for the loan. B is accurate: Federal Reserve Regulation T requires 50% initial margin, meaning investors must deposit at least half the purchase price. D is accurate: Margin accounts charge interest on borrowed amounts, typically calculated daily and compounded. This interest expense reduces net investment returns and must be factored into suitability analysis.
The Series 65 exam tests your understanding that margin accounts increase risk, not reduce it. Margin amplifies both gains and losses, charges interest on borrowed amounts, and can result in total losses exceeding the initial investment. Understanding that margin is a risk-magnifying tool, not a risk-reducing tool, is essential for proper suitability analysis and client education.
An investor opens a margin account and purchases $60,000 worth of securities using maximum allowable leverage. The securities subsequently decline in value to $42,000. Which of the following statements are accurate?
1. The investor initially deposited $30,000 to meet Regulation T requirements
2. The current equity in the account is $12,000
3. A margin call has been triggered assuming 25% minimum maintenance margin
4. The investor can lose more than their initial $30,000 investment
B is correct. Statements 1, 2, and 4 are accurate.
Statement 1 is TRUE: Using "maximum allowable leverage" under Regulation T means 50% initial margin. For a $60,000 purchase, the investor must deposit 50% = $30,000, borrowing the other $30,000 from the broker.
Statement 2 is TRUE: Current equity = Market Value - Loan = $42,000 - $30,000 = $12,000. The loan amount remains constant at $30,000 while the market value declined to $42,000.
Statement 3 is FALSE: To determine if a margin call occurred, calculate equity percentage: ($12,000 ÷ $42,000) × 100 = 28.6%. This is ABOVE the 25% minimum maintenance margin, so NO margin call is triggered. The account would need to fall below $40,000 market value before a margin call occurs ($40,000 × 25% = $10,000 minimum equity, versus $10,000 equity if market value = $40,000 and loan = $30,000).
Statement 4 is TRUE: If the securities continue declining, the investor could lose more than the initial $30,000 investment. For example, if the securities become worthless ($0 market value), the investor still owes the $30,000 loan plus accumulated interest. Margin accounts can result in losses exceeding the initial investment because the investor is responsible for repaying the full borrowed amount regardless of security performance.
The Series 65 exam tests comprehensive understanding of margin account mechanics: initial margin calculations, ongoing equity calculations, margin call triggers, and the risk of losses exceeding initial investment. Understanding that margin amplifies both gains and losses is critical for suitability analysis and risk disclosure obligations.
💡 Memory Aid
Margin account is like buying a house with a 50% down payment (Regulation T initial margin). you get leverage to control more assets, but if the value drops below 25-30% equity (maintenance margin), the bank (broker) calls demanding more money NOW (margin call) or they sell your assets. Remember: margin = magnified gains AND losses, plus you pay interest on the loan.
Related Concepts
This term is part of this cluster:
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Where This Appears on the Exam
This term is tested in the following Series 65 exam topics: